Machine for making window-envelope blanks



- -S. FURMAN. MACHINE'FOR MAKING wmnow ENV-ELOPE BL'ANKS.

APPLICATION man AUG,24, 191a.

' Patented Sept. 5, 1922.

4 SHEE1S-SHEET l.-

S. FURMAN.

MACHINE FOR MAKING wmnow ENVELOPE BLAMKS.

APPLICATION FILED AUG-24,1918. I 1 42 429 Patentedsept. 5, 1922.

4 SHEE'lS-SHEET A.

fzvenfoz:

FWM

- S. FURMAN.

MACHINE FOR MAKING wmoow ENVELOPE BLANKS.

Patented Sept. 5, 1922. v

4 sHEETssHEEI 3.

APPLICATION FILED AUGE24 1918 Inveniov Patented Sept. 5, 1922.

UNITED STATES:

PATENT OFFICE.

r-UEMAN, or woEoESTEn, MASSACHUSETTS; ASSIGNOE To UNITED STATES ENVELOPE COMPANY, 01? SPRINGFIELD, MASSACHUSETTS, A CORPORATION OF MAINE.

MACHINE FOR MAKING WINDOW-ENVELOPE BLANKSJ Application filed August 24, 1918. Serial No. 251,301.

i with the accompanying drawings, is a specilication.

The present invention relates to improvements in machines for making window envelope blanks, Sometimes known as patching llltLClllI'lGS. In such machines the envelope blanks, having previously cut window openings therein are each subjected to a patching operation, which consists'in adhesively applying a strip or patch of transparent paper to the inside face of the blank, in order to cover the window opening therein. The apertured blanks thus patched are thereupon. discharged from the machine, and are collected or stacked in suitable form for the subsequent operation thereon of folding instrumentalities contained in the same or in another machine, as the case may be.

The present invention is concerned only with the operation of patching, and hence no reference need be made to the instrumcntalities employed for folding the blanks after they have been patched. The invention contemplates the provision of a patching machine which is readily adjustable and adaptable for use with blanks of Various sizes and shapes, with the window apertures in said blanks of various sizes and located in various positions relative to the lines of fold of the completed envelope. This renders the machine substantially universal, in respect to its capability of handling blanks for the manufacture of odd and unusual sizes and shapes of envelopes, which depart from the ordinary commercial types of envelopes in size and in shape as well'as in the relative location and width of the windows therein. To this end,'the machine of the pI'GSQIli) invention embodies a novel, adjustment of the gumming devices which provide for the adhesive application of the patches to the blanks, and in cooperation therewith, a novel adjustment of the mechanism for producing the transparent patches, whereby the widths of the Same are variable, to correspond with variations in the sizes of the windows in the blanks.

In cooperation with the aforesaid mechanism for producing the transparent patches, the machine of the present invention embodies instrumentalities designed to render Said patch producing mechanism inoperative in the absence of a blank to which a patch can be applied; in other Words, in the event of a failure inthe blank feed, there is'no stoppageof the machine, but merely a cessation in theproduction of patches until the blank feed is resumed. The machine of the present invention also contemplates the provision of mechanism for stopping the feeding of blanks When a failure in the supply of blanks is imminent, thereby warning the operator of the necessity for replenishing said supply. Other and further objects of the invention will be apparent as the description proceeds, reference being had in this connection to the accompanying drawings, in which Fig. 1 is a top plan View of a machine constructed in accordance With the invention.

Fig. 2 is a front view of said machine.

Fig. 3 1s a Side View of the machine.

Figwi is a'central sectional View of the machine.

Fig. 5 is a detail sectional View, on an enlarged scale, of certain of the instrumentalities embodied in the patch producing mechanism.

Fig. 6 is a detail view of the adjustable gumming devices of the machine, and

Fig.7 is a similar view to Fig. 6, illustrating-the useof interchangeable gumming devices of different lengths.

Like reference characters refer to like parts in the different figures.

ported on a suitable adjustable table 7, with the uppermost blank of the stack in position to be operated upon by a device for separating said uppermost blank from the remainder of the stack and presenting it to the disks 5, 5.

EBaid device, in the present instance, is shown as an oscillating suction pickup 8, which is carried by a rock shaft 9 and has a suitable flexible connection 10 with the usual vacuum producing and controlling devices, not shown, that are common in mechanisms of this class. The rock shaft 9 has secured thereto an upwardly extending arm 11., Fig. 3, which carries on its free end aroll 12 that is adapted to engage a cam 13 on the shaft 4. Another arm 14, extending forwardly from said rock shaft 9, has secured thereto a spring 15, which normallyholds the roll 12 against the cam 13. The oscillations of rock shaft 9, under the influence of cam 13, causes the suction pickup 8 to descend into contact with the uppermost blank on table 7, as shown in Fig. 4, and at this time a suction is exerted through the pickup device so as to seize said blank and separate it from the remainder of the stack. Thereafter, the cam 13 causes the pickup to rock upwardly so as to carry the edge of the blank into a position to be seized by a gripping device on one of the disks 5, as hereinafter described.

The arm 14 oscillates between apair of adjustable stops or set screws 16, 16 carried by a slidable plate 17, which is adapted to have an up and down movement limited by the travel of a slot 18 therein with respect to a fixed screw or pin 19 carried by the framework. The lower end of plate 17 has pivoted thereto at 20 a pawl 21, which is pressed downwardly by a spring 22. The tooth 23 at the free end of said pawl is thus held in engagement with the teeth of a ratchet wheel 24, which is carried by a shaft 25 that is journalled between the side frames 1, 1 of the framework and below the table 7. Adjacent the pawl 21 is a second pawl 26, having a fixed pivot 27 and having its tooth 28 also adapted to engage the teeth of ratchet wheel 24. The pawl 26 is normally held in engagement with the ratchet wheel 24 by means of a spring 29, which is secured to an extension 30 of said pawl on the other side of its fixed pivot 27, and the pawl 26 thus normally operates as a holding pawl, adapted to retain the wheel 24 and shaft 25 in the position to which they are moved by the upward movement of pawl 21, during the interval that said pawl is moving downwardly with the plate 17, preparatory its next successive operative stroke.

The shaft 25 carries a pair of spur pinions 31, 31 near the ends thereof, and these pinions are in mesh with racks 32, 32 depending from the table 7, which, as shown in Fig. 2,

is adapted to move vertically on suitable guides or rods 33 carried upon the fixed framework. It will thus be seen that the rotation of shaft 4 is transmitted, through the reciprocating plate 17 and pawl and ratchet mechanism above described, to elevate the table 7 by a step by step movement in the normal operation of the machine, and thereby to maintain the stack of blanks on said table always in position to be operated upon by the suction pickup 8, notwithstanding the continuous removal of blanks from the top of said stack. The extension 30 of holding pawl 26 carries a pin 34 which is received within an elongated slot 35 of an upwardly projecting link 36. The link 36 is pivotally secured at its upper end, at 37, to a lever arm 38 which is pivoted at 39 to a stationary cross bar 40 of the fixed framework. The lever arm 38 has a handle 41 at its free end which is employed in rocking it about its pivotal axis 39, for imparting movement to the pawl 26 through the link 36. Extending at right angles to the lever arm 38 is a sliding latch rod 42, which has an inclined lower edge 43 cooperating with a shoulder 44 on the upper edge of lever arm 38 and near the free end thereof. The latch rod 42 is supported for sliding movement by means of pins or screws 45 carried by the framework and projecting through elongated slots 46 in said rod 42, the latter being urged outwardly by a tensile spring 47 and being adapted for inward movement against the force of said spring by the exertion of pressure on a knob 48. In the po sition of the parts shown in Fig. 3, the knob 48 has been pressed inwardly, thereby causing the free end of lever arm 38 to be elevated, under the influence of a spring 49, since the outer end of the inclined edge 43 is, under these conditions, in contact with the shoulder 44. This position of the parts holds the pawl 26 in operative relation to the ratchet wheel 24, and is thus the operative position for the intermittent elevation of bed or table 7, as above described,

When the handle 41 is seized by the operator, and the lever arm 38 swung downwardly, the latch rod 42, under the influence of spring 47, moves outwardly, and owing to the incline of the edge 43, looks the said lever arm 38 in its depressed position. In this depressed position, the pawl 26 is held inoperative with respect to the ratchet wheel 24, so that there is nothing to prevent the reverse rotation of shaft 25 which takes place owing to the gravity descent of bed 7 from the position to which it has been elevated. In this connection it is to be noted that the movement of pawl 26 into its inoperative position automatically prevents further operation of pawl 21, since the latter, disposed directly above the former, is carried out of engagement mass-2e with the wheel 24 by the contact of the holding pawl against its lower edge. It will thus be seen that the feeding of blanks from the table 7 can be discmitinued at will by the operator merely by de n'essing the handle ll, and furthermore, that after this is done, the machine will not begin to teed blanks again until the knob is pressed inwardly, so to cause the parts to again resume the positions illustrated in The extension 50 of the lever arm 38, on the other side of pl'VOtitl. axis 39, lies in the vertical path of a member 51, piio tally secured to the bed '7 at 52 and resting, as shown .in against a pin 53 carried by said bed. In. the operation of the machine, as the height of the stack of blanks on bed 7 is gradually decreased, said bed is correspondingly elevated, and when there are only a few blanks left on the bed 7, there would be danger in further elevation owing to the approach toward bed 7 of a member (3', which rests by gravity on the stack oil blanks and extends into the opening vided by the windows thereof. words, this member (3 which is used maintain the blanks oil? the stack in true alineinent, and also to prevent the separation from the stack of more than one blank at one time, must, for the performance oi? its functions, be supported solely by the stack and therefore the stack must not be al lowed to get so low that the bottmn 30" of said member 6" will strike the support or bed 7. To prevent the supply or blanks from running so low as to bring about the above condition, the member is so disposed as to make jlt'orcible contact with the extension .30 at a predetermined point in the elevation ot the be l when the height of the stack has been decri-sased to a safe limit, and this forcible contact rocks the lever arm 38 downwardly, and thereby automatically causes the gravity descent of the bed and the discontinuance oil the blank teed. The operator is thereby varned to replenish the stack of blanks on the bed 7, and thereafter he can cause a resumption oil? the blank teed simply by pushing in the knob i8 as above de scribed.

The suction pickup i3 is, as above de scribed, in vable in unison with. the arm l-Llabout the same pivotal axis, s a result of this construction all possibility oi too great an elevation of the table l and stacli oi blanks is eliminated; that is to say, the rotation of shaft 25 will always be a'u'td matically discontinued when the stack i." high enough to be reacled b the ahwrn stroke of the pickup. Z iis is triiie tor the reason that the top 1 stack oi blanks acts as a limit to the downward movement of suction pickup 8, 2s eliected by the low portion of cam 13. It the top or": th stack is so high as to prevent the full downward movement of the pickup, this will also prerent the contact oil? arm i l with the lower stop 16, and hence will prevent the operative reciprocation, of plate 1'? until enough blanks have been picked on? to allow the full stroke of the pickup.

l lach blank as seized by the up 8 has its adjacent edge presented to a wing device, preferably carried by the le disk 5 on shaft 4. Said disk 5 is ssrvl on its periphery, as in F at, and has journalled 55 which exdicated at cccentriczl iii a shaft tends th V i and. through the other disks 5, toward one l; i machine, and carries on its end an arm lttl'lllg a roller 57 thereon :nlapted to contcct with an inter"- or face cam 58. 'lhe short 55 is surrounded by a spring 59 which has me end secured thereto, and the other end secured to an arm (30 which rotates in unison with said disk 5 and shaft 4t, so that said spring 59 always tom s to return the shaft 55 to its normal position after the rocking of said shaft by the contact of roller 57 with cam 58. The cars so set with respect to the rotation. of shaft as to sha ply rock sz id shaft 55 just as blank is presented by suction pickup 8 to the disk 5, thereby causing the pinching of the edge of said blank by a gripper mei'nber (ll carried by shaft 55 and operating in the recess 54:. The gripper 6.]. and disk 5 thus draw the blank :trom beneath the pickup S, whose suction. may be automatically discontinued at the proper moment to release the blank, and then resi med tor the seir ure oil the ne x' succeeding blank by .zncchani n well known in. the art, which lorins no part oil? the present invention.

For accinuplishing a rapid movement of ,cr (51. in se' gr 12mg and. rel *asing the edge of t ie blank, the cam 58 is acapted to be osci lated so as to approach the roller 5i" as the latter is swung into contact with said cam, and thereby to accelerate the travel of said roller over said :am. lo this end, the

earn it} is join-nailed loosely on the shaft and has piv'otally secured thereto at 58 a rod 59, which is bifurcated its end to i is arried by the b into the bite of disks disks 5 to advance suction picl' in the bla; k securing ot a patch to cover said opening. 'lhe blank guided in its iiorizontal movement between spaced upper and lower guides (i l, e a e s pported at their rear ends u so shafts e5, (35, our-nailed in the i l, l, and having cooperating feed d 6, G thereon for continuing the ho izon-V, ravel l th blank "'ciliute the bl nk f eding disks 5, 32, and (30., ee are c isposed the gnmming instrumentalities oi the machine, applying a band of adhesive arounc the margin of the window opening in the lank while said blank is in transit between said feeding iisks. i i shaft 6? driven by suitable gearnot shown, from the main shaft 2, carlIS and a so mental memberv (33, the latter being adjnstably secured to said shaft by means of a set s 'ew 69. T he member 68 provides for the .upport of adjustable and interchangeable gumming die mem- D which are supplied with gum from a transfer roll "70, operating in conjunction with a gumming roller i1 disposed in a gum box 72. i l

ong advancing edge the member 68 is adapted to have secured thereto by means sci ews 73, a ti ted gumming die member 7 which constitutes one longitudinal edge of the die for gumining the mo 1 of the window in the blank. Said member 'J'e made removable from the segmental (S8 for the purpose of suasimilar member 7a of greater or s required by the length of the i. in any given instance is being run throng the machine. As shown in Figs. and 7, the machine is equipped for this purpose with plurality of lengths of fixed gnmming die members Yet.

or cooperation with the members '24, the machine provisos a plurality of gumming die members of corresponding lengths as shown in 6 and 7, each adapted to constitute the other lo. itudinz edge of the die for gumming the marg of the window openi g1. l l 'i e11 position on the mental member or support (38, the member '55 is singularly adjustable toward and away from the member 7% by means of screws 76, which pass through elongated slots 7'? in sa member 75. The width of the window gumming die thus constituted by members 7% and 75 is therefore variable to suit various sizes of windows, and obviously the members are interchangeable to compensate for variations in the lengths of said windows. Each fixed die member 7% has a rearward extension 78 at each end of a depth corresponding to the narrowest window, so as to provide for gumming at the ends of the windows in the blanks. When the member '7 5 is adjusted for a window of greater width, the end extensions 78 may readily be increased in length by the attachment to uges 79 of member 7 1- of various size 5' ups 80, as shown in Figs. 6 and 7, which are temporarily held in place by screws 81.

Below the shaft 6? is journalled a shaft the latter being driven from shaft 67 by table earing, not shown. The shaft 82 s adapted to have secured thereto the bed or platen cylinder which cooperates with the gumming members 74 and 7 5 carried by the segmental support 68. As herein shown, the cylinder is made in two parts, 83 and 83, which are secured together and to the shaft 82 by any suitable means such as screws, not shown, the two-part construction being adopted to permit its ready removal from the shaft 82 when it is desired to substitute a similar cylinder of different length, it being understood that, as in t 1e case of the die members, a plurality of lengths of cylinder pieces 83, each with suitable grooves 84, to match with the extensions 78, are provided. The surface of the two-part cylinder is formed with a plurality of longitudinal grooves 85, 85, the latter being so spaced as to register, by pairs, with the die members 74: and 75 in the several positions of adjustment of the latter for windows of different widths. To this end the bed cylinder S 3 is adiustably secured to the shaft 82 by means of a set screw 86, so that it can be turned thereon to bring the proper grooves 85 into position for cooperation with the gumming die. In other words, one groove 85 may be used in conjunction with any other groove to obtain the desired width, and thus with only six grooves, shown in Fig. 4-, a great number of variations are possible.

In advance of the feed disks 66, which seize the blank after it has been gummed around the margin of its window as above described, is disposed a shaft 87 which is operated by suitable gearing, not shown, from the main driving shaft 2. Said shaft 87 has secured thereto at one end a crank arm 88, Fig. 3, which provides a slot 89 for the adjustable attachment of a block 90. The block 90 has pivotally secured hereto at l which slides in a guideway 93, Fig. 5, which is provided by a bracket that is suspended from a shaft 95. The shaft 95 is journalled in bearings 96, 96 that are provided by rearwardly extending brackets 97 secured to a 82, sui i transverse rear member 98 of the fixed framework. The block 90 is'adjustable in the slot 89 as will be well understood, to vary the throw of the sliding rackbar 92 which.

ofratchet or clutch teeth 100. .Adjacent the I gear 99, the shaft 95 has secured thereto, by means of a key 101, a collar 102, and on an extension 103 of the hub of said collar is slidably mounted a ring 104.. Thering 104 has secured thereto an outwardly projecting pin 105, which passes slidably through an opening therefor provided in the collar 102, with theend of said .pin bevelled off to provide a tooth 106 adapted, as hereinafter described,

to make operative contact with the ratchet or. clutchteeth .100 on the inner face of gear 99. A spring 107, surrounding. the pin 105 in the opening of collar 1.02, bears against a. shoulder of said pin and normally tends tov press said pin in the direction of the ratchet or clutch teeth 100 of. gear 99. The ring 104 provides a peripheral groove to receive a pair or diametrically opposite lugs 108, 108, which extends inwardly from the end of a yoke 109 that loosely embraces said ring. The yoke 109 is pivoted to the fixed framework at 110, and on the other side of its pivotal axis has an inwardly curved arm 111 which carries a roll 112 in contact with a face cam 113 on shaft 67.-In the rotation of a said shaft, the yoke 109 is oscillated to cause inward and outward movement of the ring 104 on hub extension 103, thus alternately moving the tooth 106 into and out of engagement with the clutch or ratchet teeth 100 on gear 99. When the tooth 106 is engaged, the collar 102 and shaft 95 are driven in unison with the rotating gear 99, and the parts are so timed that this driving engagement takes place on that stroke of the rack 92 which will produce a clockwise rotation of gear 99; on the reverse stroke of said rack, the tooth 106 is withdrawn, and hence the shaft 95 remains stationary, being so held by a friction brake 102 on the peripherv of collar 1.02.

The shaft 95, thus intermittently rotated in the normal operation of the machine, is utilized for the feeding of the transparent material which is used to cover the gummed window openings of the blanks. Said material is drawn in a continuous strip 114 from a supply roll, not shown. which strip after passing over suitable guide and tension devices 115, is fed beneath a roll 116 which is secured to the intermittently rotating shaft 95. Beneath the roll 116 is journalled a roll 117 which is driven in unison with roll 116 by gearing .118, the two rolls 116 and 117 cooperating. ,to advance thepatch mate-j rial 114 step by step to suitable cutting devices which sever a window patch of the desired width from the end of the strip 114, as hereinafter described. In the normal. operation of the machine, the intermittently operating patch material advancing mechanism, above described, functions with regu larity and in timed relation to the movement of blanks through the machine, so that a predetermined length of said material, corresponding to the width of a patch, is fed forward by rolls 116 and 117 at the proper momentto be cut off and conveyed. into contact with the gummedwindow opening of a blank that has been at thesame time withdrawn from the stack on table 7.

It sometimes happens that there is a fail.- ure in. the blank feed, due to imperfect functioning of the suctionpickup 8, or to any other cause, as when the table 7 islowered, either automatically or bythe operator. Under. these circumstances, the production of a patch, in the-usual regularity of operation of-the machine, would not only besuperfiuous, but would tend to. clog the mechanism is made in every instance dcpendentupon the presence of a blank in actual transit through the machine; in the absence of such blank, the patch. material, which would ultimately be applied thereto, is not fed forward by the rolls 116, 117, but instead said rolls are maintained inoperative until ,azblank is actually on its way. The devices employed for this purpose will now be described in detail.

A shaft 119, journalled in bearings 120,120 on the front of the machine,.has secured at its central portion a depending arm 121 which provides a plurality of spaced. detecting fingers 122, 122 in proximity to the disk 5 which carries gripperfil. Said shaft 119 is adapted to be oscillated through a limited which tends to rock the shaft 119 in a direction to throw the fingers 122 inwardly, one on each side of the central disk 5. An arm 130 projecting upwardly from shaft 119 is connected to a sliding rod 131 that projects rearwardly into proximity to arm 111 of yoke 109.

The connectionbetween arm 130 and rod 131 is a; lost motion connection; that is to say, the rod 131 provides an elongated slot 132, which receives a pin 133 that is carried by the free end of the arm 130. A spring 13% is connected at one end to said pin and at the other end to a pin 135 carried by rod 131, the tendency of the spring being to draw the pin 133 to the left in said slot. As shown in Fig. 3, the pin is disposed at the right hand end of the slot, due to the engagement of a blank by the fingers 122, 122. The cam 125, acting through rod 123, arms 123 and 130 and the above described pin and slot connection, imparts reciprocation to the rod 131, the inner end of which is guided in a suitable guideway 136 of the fixed framework. Said inner end has a reversely extended hook portion 137 which is adapted to cooperate with a reciprocating plate 138 that is adapted to slide in a bracket 139. Said plate 138 is pivotally connected at 140 to the arm 111 of the pivoted yoke 109, so that the oscillations of said arm 111 under the influence of cam 113 cause the transverse in and out movement of said plate 138 in timed relation to and without interference by the movement of the adjacent hook portion 137 of rod 131.

The above condition holds true when a blank is undergoing conveyance by the disks 5, 5 and gripper 61. In other words, the fingers 122 are drawn lightly inward against the surface of the blank by the light spring 129, and the contact of said fingers with the blank prevents the arm 128 from following the final inward and upward movement of rod 123, which latter proceeds independently under the influence of a spring 141. This limiting of the oscillation of shaft 119 thus limits the forward travel of rod 131, so that hook 137 does not move far enough toward the plate 138 to interfere with the regular reciprocation of the latter. The forward and downward stroke of rod 123, under the influence of cam 125, effects the movement outward of fingers 122 in time to prevent the engagement of said fingers with the margin of the window opening in the blank and thus tearing of the window is prevented. However, when there is a failure in the blank feed, there is nothing to prevent the full inward movement of said fingers 122, since the arm 128 can follow the rod 123 to the limit of its inward and upward movement. his increased. counter-clockwise rotation of shaft 119, Fig. 3, causes the pin 133 to engage the forward end of slot 132 and thereby draws the rod 131 to the left, so that the hook 137 is interposed in the path of movement of the plate 138. As a result, the spring 14.2, which acts on arm 111 to hold the roll 112 against cam 113, is rendered ineffective to carry said roll against the lowest portion of said cam, and hence the degree of oscillation of yoke 109 about pivot 110 is appreciably reduced.

This reduction of movement prevents the tooth 106 from reaching the teeth 100 of gear 99, and thereby causes an interruption in the operation of the intermittent patch material feeding means. f nch an interruption continues until the feed of the blanks is resumed, whereupon the hook 131' is withdrawn to permit the full reciprocation of plate 138. In this way, whenever there is a failure of the blank feed, or when ever the bed 7 is caused to descend, either automatically or at the will of the operator, there is brought about a discontinuance in the operation of the intermittent patch material feeding mechanism, so that no patches are produced during the absence of blanks from the feed disks 5, 5.

In the normal operation of the machine. however, the patch no terial is intermittently advanced by the rolls 116 and 11'!- so that its end. projects a predetermined distance, at each operation, beyond the stationary memher 143 of a cutting mechanism, said end being projected over an inciincd guide plate 144 so as to be substantially tangent to the surface of a cylinder 14-5 that is carried by the shaft 87. The inclined plate 14.4 sup ported in proximity to the cylinder 14-5 by means of brackets 146, 146 that are carried on a transverse rod 147 of fixed framework. For cooperation with the provided a patch. mai'ierial'holdi- 1 18 which depends from arms 14-. are secured to a rock shaft 150, carried in. brackets 151, 151 of the fixed framework. The cam 152 on sh aft 37 is operable through an arm. 153, Figs. 1 and 3, to rock the shaft 150 at intervals so as to carry the member 148 down into contact with the patch material on the plate 14-41, so as to securely hold said patch material. in the position to which it has been advanced, readiness for the operation of the patch severing mechanism, which will now be described.

For cooperation with. the forward uttinu edge of member 1 13 is pi ed a knife 154. which is carried by a bar155 that is pivoted on a shaft or. trunnion 156, supported in a bearing 15'? on the rear member 98 of the fixed framework. (in the other side of its pivotal support, said bar 155 has an extension 158 that is connected pivotally an d universally, at 159, to rod 160. The rod 130 pivotally connected at its lower end at 161 to a lever 162, Fig. 1, which is itself pivoted. on the lower shaft (35. The lever 10%. carries a cam roll 163 which is held by a spring 16 in engagement with a cam 165 on shaft 87. By the operation of said cam and lever, the bar 155 is rocked at predetermined intervals to cause a severing cut of knife 154 against the forward edge of member 143, said edges being maintained in close contact by a spring 166 that forces the bar 155 rearwardly. The holding member 1&8 presses the patch material against plate 144: during the cutting of said material by the knife 15ft, thereby preventing displacement of the severed patch and at the same time affording sufficient tension. on the material to prevent its deflection when engaged by the knife edge. The severed patch is held by the member 148 in position to be seized by suitable engaging and gripping devices carried by the rotating cylinder 1 15, so as to convey said patch into contact with the horizontally travelling blank. to which it is to be applied. It is to be noted that the patch producing mechanism, involving as above described, a patch material feeding means and a patch severing means, is adjustable to vary the width of the patches cut off, so as to maintain the proper relation between said patches and the windows of the blanks that are, in any given instance, being run through the machine. It has been shown that the win dow gumming devices are adjustable both as to width and as to length, and obviously, it is wholly desirable that the patches for application to the windows be correspondingly variable in size. The length of each patch is, of course, determined by the width of the supply roll of patch material, and the patch handling devices, feed rolls and sever-- ing means are made of suiiicient extent transversely of the machine to handle patches varying from the minimum to the maximum length. The width of each patch, on the other hand, is a function of the feeding and severing means, and these mechanisms in the present machine are sodisposed as to permit the necessary variation in the width of the patches without affecting the extent to which each patch is projected. beyond the plate 144 for seizure of its edge by the grip ping devices of conveying cylinder 145.

To this end, said plate 1 14: is fixed in its relation to the periphery of cylinder 145, by its attachment to the cross rod 117. On the other hand, all of the other patch handling inst-rumentalities, except the holding member 148, are adjustable forwardly and rearwardly of the machine, said instrumentalitics being supported on the rear frame member 98, which has extensions 167, 167 by which it is attached to the side frames 1, 1. The extensions 167, 167 have elongated slots 16S therein tl'irough which extend holding bolts 169, that are adapted to be loosened when desired to permit the forward or rearward movement of member 98 and the patch feeding and cutting devices car... d thereby. It will be seen that the width of the patches is reduced. by a forward movement, ad is increased by a rearward. movement, of these various instrumentalities. To accommodate the operating parts to such movement, they are, wherever necessary, adjustable as to length; it has already been shown that the block 90 is adjustable in the crank arm 88 to anism.

vary the throw of the rack bar 92, and similarly the yoke 109 has an adjustable slot connection 170, Fig. 1, with the arm 111., so as to permit the shortening or lengthening of said yoke, depending upon the position to which the member 98 is moved. The universal connection 159 of the knife bail con'ipensates in a similar manner for the forward or rearward movement of the severing mechanism without .1 *ctinp; the oper (ion thereof. It will be obvious that, if desired, graduations may be marked on the relatively fixed and relatively movable elements one or more of these adjustable connections, as for instance the connection 170, whereby the desired width of the patch may be employed. to exactly determine the setting of the parts.

The cylinder 141-5 provides cutaway portions 171 for the operation of grippers 17:2, 112, which are substantial y similar to the gripper 61 of the blank conveying mech- Said grippers 172 are carried on a shaft 173, jouinalled eeeentrieally in cylinder 145 and operated in a manner similar to the shaft by a spring 1'2 cam 175, cam roll 176 and arm 17?. The care 175 is oscillated in a manner similar to the cam 58, and for the same purpose, by rod 178 carrying a cam roll 179 that is held in contact by a spring 180 with a cam 181 on shaft- 67. Adjacent the grippers 142, 172, the cylinder 141:5 carries a pair of outwardly projecting spring pressed spurs 189/, and said grippers at their free ends have recesses or open incis to receive said spurs. A

In the ecunter clocltwise rotation of the cylinder 1 15, the grippers 172 he retracted in their cutaway portions 171 ui'itil they have just passed the forward edge of plate 144. it this point the shaft 173 is rocked quickly by cam 175 to cause the grippers to seize the PJOjQCtlnP; edge of the patch, which at that time is released by the holding member 148. The edge of the patch pinched between the grippers and the surface of cylinder 14;), and said patch is impaled on the spurs 182 by this pressing action. As the cylinder 14.5 continues to rotate, the shaft 1.73 is reversed, to draw the grippers inwardly of their cutaway portions 171 and thereby to relea the patch. which however still held in proper registered pos tion on the cylinder 1415 by reason of its impalement by the spurs 182. The patch is thus conveyed downwardly on the cylinder 1 and it reaches the bottom of its movement in timed relation to the arrival of blank as projected horizontally rearward by tl ed disks 66., Below the cylinder 145 is a ccopcratingcylinder and the contact of the spring pressed spurs 189 with the sin-face of cylinder 183 causes said spurs to be pressed inwardly, thereby releasing the patch, and permitting its adhesion to the gummcd margin of the window in the blank, which reaches this nting the oper tion of said feeding a e patch material in the absence slthrough the machine member. e oi the class described, with blank advancing synchronously operating devices patches to be applied to said J named meal s comprising a .inittenly advancing a -ial, a rcc'procating rack, ,h said rack, and means engagement be- 1. rolls in one direcsaid pinion, and c ei's for engaging the L ad *ancing means, for ive operation of said rolls a blank in motion on said said rotatin a machw A. 1 171 Cu: Alkali-Oil means, o:

:r 13 ion" bin absence ei hers, i spondi of the class successive described, apertured for 1nterlTl aches to be applied to the heirs, means for detecting oianlrin motion on said and means operable by ans for interrupting the of patch material in the be L in motion on said adj tiers, a" line of the class described,

n c -with means for feeding abeu or conv *ying patches into opei 3'" wlan is, means for ieeding stunning. terial, means for cutting 8. -Web, and means "for ion of said patch feeding '11 i fl (ill 881?? 40 aron c 1' means relatively to said in a \vinz'loiv envelope re; a eans, whereby to vary the roh table .ogumnnne; die idth, produced.

.le cylinder it -with die ha a phat spaced 7' ydecves obtainable by the L minp; di, e

o the class described, blanks, and means for into contact With said 11 means for propatches irom a continuous r 1 3 or patch. material, said patch producing inder angznla n" beinga hustable, relatively to said :Z-FOCTILG cooper p conreyi -ieai s, whereby to vary with s id summing; di the id patches.

4: iii a machine 0 9. In a machine of the class described,

rotating member ad we r feeding-bin: i s, and means for conmovement of blanks, means for nite 7 Web of patch material veying patches into contact with said blanks, in combination with means "for intermittently a Web oi patch material and means Z r "ares of said blanle, said f i; oil successively ted portions of f t T naterial con r1 0 form patches, said Web feeding c lzoc ant means being ad ustable in so 1 rely to said. patch conveying and means for car i by said nioo upon i v cations of said rack, in co means associated with said rotatin machine 01 the ole s described, feeding blanks, means for patches into contact With said blanks, in combination With means for cut ting successive patches from the end of a Web of material, means for intermittently feeding said. Web, in advance of each cut, to a predetermined position with respect to said. conveying means, means for adjusting the position of said cutting means relatively to said conveying means, and means for varying the feed of: said Web in accordance With the position of adjustment of sa d cutting means, whereby patches 0t dlllerent widths will be produced.

ll. In a machine of the class described, the combination with means for advancing apertured blanks, means for applying a band of gum around the margin of the aperture in successively advanced blanks, means for adjusting said gum applying means to conform to the size and shape of the aper tures in said blanks, means for seizing and conveying patches into contact with the gummed portions oi said blanks, means for producing said patches from a continuous Web oi? material, and means for adjusting said. patch producing means in conformity with said gum. applying means, to present patches of different Widths to said seizing and conveying means.

12. In a machine of the class described, a gumming die support, comprising a device adapted to receive and have fixedly secured thereto, interchangeably, longitudinal Window gumming members of different lengths, and means for adjustably securing said device, interchangeable die members corresponding to said. fixed members.

13. In a machine of the class described, a gumming mechanism comprising a device adapted to receive and have fixedly secured thereto, interchangeably, longitudinal Windon gumming members of different lengths in combination With a. rotatable shaft adapted to receive and have secured thereto, interchangeably, cylinders of different lengths corresponding to the lengths of said die members.

Dated this 20th day of August, 1918.

SAMUEL FURMAN.

lVitnesses NELL'IE lVHALEN, PENELOPE COMBERBAOH. 

